NFKB1 and gastric cancer: The -94 ins/del ATTG polymorphism (rs28362491) in NFKB1 promoter reportedly elicits a regulatory effect on the NFKB1 gene and plays a role in the susceptibility of individuals to various malignancies, including gastric cancer [18], ovarian cancer [19], prostate cancer [20], and oral squamous cell carcinoma [21].